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11 <br />' November 28, 2006 <br />NOA Project Number: E06151A <br />NEIL O. ANDERSON <br />AN D ASSOCIATES <br />OPERATION & MANAGEMENT PLAN <br />3404 TURNPIKE ROAD <br />FRENCH CAMP, CALIFORNIA <br />1 1.0 INTRODUCTION <br />GEOTECHNICAL <br />ENVIRONMENTAL <br />INSPECTIONS & TESTING <br />LABORATORY SERVICES <br />POOL ENGINEERING <br />POST TENSION DESIGN <br />NEIL O. ANDERSON & ASSOCIATES, INC. (NOA) has prepared this Operation and Management <br />Plan (O&M Plan) for the residence located at 3404 Turnpike Road, French Camp, California. The <br />residence is within 1,000 feet of the boundary of a disposal area. This residence is designed with a <br />passive methane gas mitigation system located below the floor slab with a vent to the outside, along with <br />three methane gas sensors. <br />1 2.0 POLICY <br />1 The methane mitigation system will need to be maintained and operated in a manner that <br />assures compliance with regulatory agencies. <br />• Residents shall be instructed and trained on how to monitor the readings and what to do in case <br />of an alarm. Practice a home exit plan with the residences (Section 7.0). <br />1 A copy of this O&M plan shall be available for all residents and owners of the property. <br />Residents shall be familiar with its contents and will be trained in operating the system. <br />' In case of a problem with the system, appropriate corrective actions need to be conducted <br />immediately. <br />3.0 DESCRIPTION OF SYSTEM OPERATION <br />The passive methane mitigation system allows any build up of gases beneath the slab floor to be vented <br />' to the atmosphere and to act as a barrier between the subfloor and the living space. Any possible gas <br />produced from the nearby disposal area that raises to beneath the slab of the residence will enter the <br />gravel subfloor. This gas within the gravel may then enter the horizontal pipes located beneath the slab <br />' within the gravel, and travel through the pipe, up the vent, and exit out the pipe protruding from the <br />roof of the residence. One sensor is located within the vent to detect any methane gas migration up the <br />vent. Two additional sensors, two located in the residence and one in the garage are to detect any <br />LODI ■ SACRAMENTO ■ MODESTO <br />ENVIRONMENTAL DIVISION 902 Industrial Way, Lodi, California 91140 0 209.367.3701 0 209.369.4228 fax ■ www.noanderson.com <br />